/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
import sun.security.jca.GetInstance;

/**
 *
 * @author sa11
 */
public class ProcessLogin extends HttpServlet {

    private String connURL = "jdbc:sqlserver://idasql-db.hb.se:56001;" + "databaseName=dbtht1117";///dbtht1117"; // ange databas namn här";
    private String userName = "dbtht1117"; // for SQL database connection
    private String password = "panwer09"; // for SQL database connection
    
    private Statement stmt = null;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        Statement stmt = null;
        try {
            stmt = initiateSQL(out);
            String username = request.getParameter("username");
            String passwd = request.getParameter("passwd");
            
            
            ResultSet rs = stmt.executeQuery("SELECT losenord FROM Anvandare WHERE anvandarID LIKE \'" + username.trim() + "\';");
            
            if (rs.next()) {
                if (rs.getString(1).equals(passwd)) {
                    response.sendRedirect("testarSub.jsp");
                    LoggedInBean loggedInBean = LoggedInBean.getInstance();
                    loggedInBean.setusername(username);
                    loggedInBean.setPassword(password);
                    
                } else {
                    out.println("<html><head><title>hej</title></head><body><p>fel losen</p></body></html>");
                }
            } else {
                out.println("<html><head><title>hej</title></head><body><p>inga resultat/fel användarnamn</p></body></html>");
            }
            /**/
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet ProcessLogin</title>");  
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet ProcessLogin at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
             */
        } catch (SQLException ex) {
            out.println("fel: " + ex.getMessage());
        } finally {
            out.close();
        }
    }

    private Statement initiateSQL(PrintWriter out) {
        // driver and connection try catch
        Connection conn = null;
        
        try {

            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            conn = DriverManager.getConnection(connURL, userName, password);
            stmt = conn.createStatement();

            /*
            // test
            DatabaseMetaData md = conn.getMetaData();
            ResultSet rs = md.getTables(null, null, "%", null);
            out.println("<p>");
            while (rs.next()) {
            out.println(rs.getString(3));
            }
            out.println("</p>");
            /**/
            // stmt.executeUpdate("USE dbtht1117;");
            /*
            ResultSet rs = stmt.executeQuery("SELECT * FROM Branch");
            out.println("<p>");
            while(rs.next()){
            out.println(rs.getString(1));
            out.println("<br />");
            }
            out.println("</p>");
            /**/
        } catch (ClassNotFoundException ex) {
            out.println("error at driver");
        } catch (java.sql.SQLException ex) {
            out.println("error at initiateSQL");
        } finally {
            return stmt;
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
         processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
